InvestmentsTop Global NewsMarketsReal Estate United Airlines says using larger jets on 737 MAX routes is ‘costing money’ By financialnews_rlv83x - April 9, 2019 0 174 United Airlines’ use of larger aircraft on routes previously flown by Boeing Co’s grounded 737 MAX jets is costing the carrier money in the short-term, President Scott Kirby said in a letter to employees seen by Reuters on Tuesday.